So my co and I decided to take a short break from The Want for an Heir (We're sorry, but it's a tedious process and sometimes we just need a break) to work on a funny little AU where everyone is merfolk and the males get pregnant like seahorses and both males and females can impregnate them.
In this AU, Mycroft has their first three broods, the first two times, it being twins, the third being triplets (which are considered small broods). What we see here is Greg's first brood, the poor mer ending up with what probably be a brood of six or seven when he was under the impression that his own broods would be small like Myc's. This is only about his fourth month in his five month pregnancy.
He's just taking a rest right now.
We may get this little AU up on Ao3 soon, so keep your eyes peeled.